Librem 5 hubs / docks

Having a new L5 I immediately tried to hook it up a screen via my HP USB-C Dock G5 and … nothing.

  • When connected to the USB-C dock, the L5 starts charging and led turns red
  • lsusb output is equal with or without USB-C connection, not showing the dock
  • In settings / display the extra screen does not show up
  • Top info icon “undocked” shows no change: still greyed out

I found this page: https://source.puri.sm/Librem5/community-wiki/-/wikis/Tested-Accessories#hubs

My questions:

  • did anyone else try a HP USB-C Dock G5?
  • for the other docks: did everything magically work automatically when connecting, or is some kind of scripting or driver installation required?

The wiki is pretty great, but it would help me to see a bit more in detail what people did to make it work and understand current limitations / requirements to docks. Many thanks,

Roeland

edit 20211014: aditional info

HP USB-C Dock G5 is connected to

  • logitech wired keyboard
  • logitech mouse wireless USB-dongle
  • displayport cable to Monitor Dell U2713HM
  • ethernet cable
  • power
    all proven to work with windows laptop

Specs HP USB-C Dock G5
Hostinterface USB 3.2 (Gen1, 5Gb/s) type-c
Connections 3.5mm (4-pin), DC connector, 2x DisplayPort, HDMI 2.0, RJ45,
4x USB 3.2 (Gen1, 5Gb/s), 2x USB 3.2 (Gen1, 5Gb/s) type-c
Ethernet (RJ45) Ethernet 1Gbps, Ethernet 100Mbps
Video out 2x DisplayPort, HDMI (max version HDMI 2.0)

1 Like

i couldn’t get mine to work either

I don’t know the answer to your question but, given that not everyone will have ready access to any given dock, it may help to mention how the monitor is connected to the dock (e.g. HDMI v. DP v. USB-C altmode passthrough) and what else was connected to the dock. (The bare minimum is to provide a product link for your dock.)

If you want to spend some time troubleshooting then lsusb on the phone may show how the dock is presenting itself to the phone.

Does “nothing” mean that nothing appeared on the screen or USB keyboard and/or mouse connected to the dock were not recognised or both?

You would want to check the video requirements e.g. 4K UHD @ 60 Hz may simply not work but in any case for some video settings to work would require support in all three of: phone, dock, monitor.

Where was power coming from and going to? (Given that the Librem 5 doesn’t have a massive amount of juice to spare, a dock that has its own power input and hence that is self-powered and hence that could even deliver power to the Librem 5 could be desirable.)

Some docks can be confusing if they have multiple USB-C ports as to whether “all USB-C ports are created equal” or you must connect up in a certain way.

I would assume, in the absence of other information, that the answer is “nothing”. It worked out-of-the-box. Unless the notes say otherwise.

2 Likes

I don’t have my L5 yet (I pre-ordered 3rd qtr '18) but I’ve been using a NexDock360 with my RPi4b8gb and PPbeta2021 and RPi4 works superbly, but the PP still has software work that needs to be done (or maybe my cabling is not right). Cables/connectors have to be wired right, I’m not an expert but I grew up in the age of 70’s where one had to get the connectors and solder the wires between connectors on both ends of the cables between devices according to the pin outs, and today it may be easy to get the cables but there are MANY standards and it has to be the right standard for the cable to work. My experience is that sometimes, much of the times seems to me, that the needed info (or correct info) is not noted. So I have a multitude of cables in my spaghetti collection that I try out to get things to work. Note here that as of late that I’ve gotten lazy, or maybe just run out of flux, and just been a collector of cables/connectors/adapters to get a multitude of devices to work together. Or not :wink:

I don’t have my L5 yet (I pre-ordered 3rd qtr '18) but I’ve been using a NexDock360 with my RPi4b8gb and PPbeta2021 and RPi4 works superbly, but the PP still has software work that needs to be done (or maybe my cabling is not right). Cables/connectors have to be wired right, I’m not an expert but I grew up in the age of 70’s where one had to get the connectors and solder the wires between connectors on both ends of the cables between devices according to the pin outs, and today it may be easy to get the cables but there are MANY standards and it has to be the right standard for the cable to work. My experience is that sometimes, much of the times seems to me, that the needed info (or correct info) is not noted. So I have a multitude of cables in my spaghetti collection that I try out to get things to work. Note here that as of late that I’ve gotten lazy, or maybe just run out of flux, and just been a collector of cables/connectors/adapters to get a multitude of devices to work together. Or not :wink:

With me there are 2 docks without configuration including display via HDMI. Now none of the docks can display via HDMI anymore. Convergence is a beauty memory for me at the moment.

thanks - I updated the information as per your suggestion

As to the wiki tested accessories, the tested accessories shows fairly minimal information on what to test, or what response to expect. I will give matrix group a go. If someone knows another site that captures this type of information, please let me know.